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<li class="level1"><a href="#properties"><span lang="zh-cn">属性</span></a></li>
<li class="level1"><a href="#details"><span lang="zh-cn">详细信息</span></a></li>
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<h1 class="title">QtObject QML <span lang="zh-cn">类型</span></h1>
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<p>QML type<span lang="zh-cn">关于基本类型，</span><a href="#details"><span lang="zh-cn">更多...</span></a></p>
<!-- @@@QtObject -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> <span lang="zh-cn">导入语句：</span></td><td class="memItemRight bottomAlign"> import QtQml 2.12</td></tr><tr><td class="memItemLeft rightAlign topAlign"> 
	<span lang="zh-cn">实例化于：</span></td><td class="memItemRight bottomAlign"> <a href="qml-qtqml-qtobject.html"><a href="../qtcore/qobject.html">QObject</a></td></tr></table></div><ul>
<li><a href="qml-qtqml-qtobject-members.html"><span lang="zh-cn">所有成员列表，包括继承成员。</span></a></li>
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<h2 id="properties"><span lang="zh-cn">属性</span></h2>
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<li class="fn"><b><b><a href="qml-qtqml-qtobject.html#objectName-prop">objectName</a></b></b> : string</li>
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<!-- $$$QtObject-description -->
<a name="details"></a>
<h2 id="details"><span lang="zh-cn">详细信息</span></h2>
<p><a href="qml-qtqml-qtobject.html">QtObject</a>类型是一个非可视元素，它只包含<a href="qml-qtqml-qtobject.html#objectName-prop">objectName</a>属性。</p>
<p>如果你需要一个非常轻量级的类型来包含一组自定义属性，那么创建一个<a href="qml-qtqml-qtobject.html">QtObject</a>会很有用:</p>
<pre class="qml">

  import QtQuick 2.0

  <span class="type"><a href="../qtquick/qml-qtquick-item.html">Item</a></span> {
      <span class="type"><a href="qml-qtqml-qtobject.html">QtObject</a></span> {
          <span class="name">id</span>: <span class="name">attributes</span>
          property <span class="type"><a href="qml-string.html">string</a></span> <span class="name">name</span>
          property <span class="type"><a href="qml-int.html">int</a></span> <span class="name">size</span>
          property <span class="type"><a href="qml-variant.html">variant</a></span> <span class="name">attributes</span>
      }

      <span class="type"><a href="../qtquick/qml-qtquick-text.html">Text</a></span> { <span class="name">text</span>: <span class="name">attributes</span>.<span class="name">name</span> }
  }

</pre>
<p>它对于<span lang="zh-cn">C</span>++集成也很有用，因为它只是一个普通的QObject。更多细节请参阅<a href="../qtcore/qobject.html">QObject</a>文档。</p>
<!-- @@@QtObject -->
<h2><span lang="zh-cn">属性文档</span></h2>
<!-- $$$objectName -->
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<tr valign="top" class="odd" id="objectName-prop">
<td class="tblQmlPropNode"><p>
<a name="objectName-prop"></a><span class="name">objectName</span> : <span class="type"><a href="qml-string.html">string</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>此属性<span lang="zh-cn">保存特定object</span>实例的<a href="../qtcore/qobject.html#objectName-prop">QObject::objectName</a><span lang="zh-cn">属性</span>。</p>
<p>这允许<span lang="zh-cn">C</span>++应用程序使用<a href="../qtcore/qobject.html#findChild">QObject::findChild()</a>方法定位QML组件中的项。例如，下面的<span lang="zh-cn">C</span>++应用程序定位子<a href="../qtquick/qml-qtquick-rectangle.html">Rectangle</a>项并动态更改其<code>color</code> 
<span lang="zh-cn">（颜色）</span>值:</p>
<pre class="qml">

  <span class="comment">// MyRect.qml</span>

  import QtQuick 2.0

  <span class="type"><a href="../qtquick/qml-qtquick-item.html">Item</a></span> {
      <span class="name">width</span>: <span class="number">200</span>; <span class="name">height</span>: <span class="number">200</span>

      <span class="type"><a href="../qtquick/qml-qtquick-rectangle.html">Rectangle</a></span> {
          <span class="name">anchors</span>.fill: <span class="name">parent</span>
          <span class="name">color</span>: <span class="string">&quot;red&quot;</span>
          <span class="name">objectName</span>: <span class="string">&quot;myRect&quot;</span>
      }
  }

</pre>
<pre class="cpp">

  <span class="comment">// main.cpp</span>

  <span class="type">QQuickView</span> view;
  view<span class="operator">.</span>setSource(<span class="type">QUrl</span><span class="operator">::</span>fromLocalFile(<span class="string">&quot;MyRect.qml&quot;</span>));
  view<span class="operator">.</span>show();

  <span class="type">QQuickItem</span> <span class="operator">*</span>item <span class="operator">=</span> view<span class="operator">.</span>rootObject()<span class="operator">-</span><span class="operator">&gt;</span>findChild<span class="operator">&lt;</span><span class="type">QQuickItem</span><span class="operator">*</span><span class="operator">&gt;</span>(<span class="string">&quot;myRect&quot;</span>);
  <span class="keyword">if</span> (item)
      item<span class="operator">-</span><span class="operator">&gt;</span>setProperty(<span class="string">&quot;color&quot;</span><span class="operator">,</span> <span class="type">QColor</span>(<span class="type"><a href="qml-qtqml-qt.html">Qt</a></span><span class="operator">::</span>yellow));

</pre>
</div></div><!-- @@@objectName -->
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